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LH (Luteinizing Hormone)
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$280
/LH+%28Luteinizing+Hormone%29?
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Luteinizing hormone is a protein produced by the pituitary gland. Luteinizing hormone helps regulate the menstrual cycle and egg production in women. An increase in luteinizing hormone levels about midway through the menstrual cycle (day 14 of a 28-day cycle) causes ovulation. In men, luteinizing hormone stimulates the production of testosterone.
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Also known as: LH. LH is often used in conjunction with other tests (FSH, testosterone, estradiol and progesterone) in the workup of infertility in both men and women. LH levels are also useful in the investigation of menstrual irregularities and to aid in the diagnosis of pituitary disorders or diseases involving the ovaries or testes.
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The basal secretion of LH in men is episodic and has the primary function of stimulating the interstitial cells (Leydig cells) to produce testosterone. The variation in LH concentrations in women is subject to the complex ovulatory cycle of healthy menstruating women, and depends on a sequence of hormonal events along the gonado-hypothalamic-pituitary axis. The decrease in progesterone and estradiol levels from the preceding ovulation initiates each menstrual cycle. As a result of the decrease in...
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Sequence: pGlu-His-Trp-Ser-Tyr-Gly-Leu-A rg-Pro-Gly-NH2;
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The Luteinizing Hormone (LH) test is routinely order to evaluate fertility in both men and women. LH can also assist in the diagnosis of pituitary gland disorders and menstrual irregularities.
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(US)